HEIDENHAIN TNC 640 (34059x-05) User Manual

Page 403

Adaptive feed control AFC (Option #45)

11.3

TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 1/2015

403

Column

Function

POUT

Spindle power at which the TNC is to detect tool
exit from the workpiece. Enter the value in percent
of the learned reference load. Recommended input
value: 8 %

SENS

Sensitivity (aggressiveness) of feedback control. A
value between 50 and 200 can be entered. 50 is for
slow control, 200 for a very aggressive control. An
aggressive control reacts quickly and with strong
changes to the values, but it tends to overshoot.
Recommended value: 100

PLC

Value that the TNC is to transfer to the PLC at
the beginning of a machining step. The machine
tool builder defines the function, so refer to your
machine manual.

In the

AFC.TAB

table you can define as many control

settings (lines) as desired.

If there is no AFC.TAB table in the

TNC:\table

directory, the TNC uses permanently defined internal
control settings for the teach-in cut. It is best,
however, to work with the AFC.TAB table.

Proceed as follows to create the AFC.TAB file (only necessary if the
file does not yet exist):

Select the

Programming mode of operation

To call the file manager, press the

PGM MGT key

Select the

TNC:\ directory

Make the new file

AFC.TAB

and confirm with the

ENT key: The

TNC shows a list of table formats

Select the

AFC.TAB

table format and confirm with the

ENT key:

The TNC creates a table with the

Standard control settings